Simple deterministic approximation algorithms for counting matchings

  title={Simple deterministic approximation algorithms for counting matchings},
  author={Mohsen Bayati and David Gamarnik and Dimitriy A. Katz and Chandra Nair and Prasad Tetali},
We construct a deterministic fully polynomial time approximationscheme (FPTAS) for computing the total number of matchings in abounded degree graph. Additionally, for an arbitrary graph, weconstruct a deterministic algorithm for computing approximately thenumber of matchings within running time exp(O(√n log2n)),where n is the number of vertices. Our approach is based on the correlation decay technique originating in statistical physics. Previously thisapproach was successfully used for… CONTINUE READING
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